The document provides information about the Combined Defence Services (CDS) exam conducted by the Union Public Service Commission in India. It discusses the three main sections of the Indian armed forces, the eligibility criteria for the CDS exam, the exam pattern and syllabus, and tips for preparation. The key points are: 1) The CDS exam is conducted twice a year and consists of papers in English, general knowledge, and mathematics. It is a two-step process involving a written exam and services selection board interview. 2) The exam is open to unmarried Indian citizens between the ages of 20-24 who meet the education requirements of at least a bachelor's degree. 3) The syllabus includes English, general